Check out www.buckeyetriumphs.org (one of the best TR6 references on
the net). On the Technical page, there is a road speed vs. rpm
calculator.
Tim Holbrook
1971 TR6
--- James Henningsen <jdhenn@cfl.rr.com> wrote:
> From: "James Henningsen" <jdhenn@cfl.rr.com>
> To: "6 Pack TR6 List" <6pack@autox.team.net>
> Subject: Tire Size and RPM's
> Date: Mon, 1 Jul 2002 11:40:49 -0400
>
> Listers,
> I have a 75 TR6 with 4 speed no overdrive and 195-65-HR15 tires. At
> highway
> speeds (70mph on the speedo) I am running near 4000rpm. I an driving
> from
> Florida to PA for TRF Summer Party in August and hesiatte to run the
> engine
> that long at 4000rpms. The cost of buying a rebuilt overdrive still
> doesn't
> make sense for the limited highway driving I do. Anyone know how much
> lower
> the rpms might be reduced by getting a set of higher profile tires
> (205-70-15)?
>
> Thanks
> Jim Henningsen
> Kissimmee, FL
> 75 TR6
> 80 TR8 (x2)
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